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I have found the solution thought it would be good to share:
so the formula should be :
=((MAX(CT$6-$N8,0)-MAX(EOMONTH(CT$6,-1)-$N8,0))-(MAX(CT$6-$O8,0)-MAX(EOMONTH(CT$6,-1)-$O8,0))+(EOMONTH(CT$6,0)=EOMONTH($N8,0)))*1
:)
I am trying to write an excel formula which can be dragged across a row of cells to give the number of days in each month between two specified dates. E.g:
I tried using a if with sum product formula from the same website but for some reason it is not recognising the days of last month. was wondering if someone could help explain what this formula does and how to correct it.
=IFERROR(IF(AND(CS$6>=$M9,CS$6<=$N9),SUMPRODUCT(--(MONTH(ROW(INDIRECT($M9&":"&IF($N9="",TODAY(),$N9))))=MONTH(CS$6))),),"")
SECOND REVISION (R2)
Updated workbook link to capture fixed column headings
Eqn / formula also includes static view
Depending upon years spanned, R2 represents a less favourable outcome re space (will require more columns). In this case, number of additional columns required to match stacked view ~100 (!!).
FIRST REVISION (R1) etc. based upon #Charlotte.Sarah.Smith feedback
Days in each month were 1 day less than they should have been - this has been corrected (in both screenshot, linked sheet, and relevant eqns)
Also showcase a couple of sample illustrations/visual representations which may/not be of interest (included within linked sheet too)
Suppose we wanted to expand upon #Will's solution by stacking the dates by year, so that column headings can vary according to different start dates (as opposed to the very first start date that happens to appear)...
For instance, if the next row included the date range 'start = 10/02/16' through 'end = 15/03/19' - you'll appreciate that the number of columns spanning Jan-Dec ('16), Jan-Dec ('17),... up to (and incl.) the range in the first row (Jan '21 - Mar '23) becomes unwieldy.
By using a data table (see here) you can produce a 'stacked' view of the number of days per month regardless of the year (!) - see screenshot below and link to this [updated/corrected] worksheet.
R2 screenshot:
REVISION
See validation/reconciliation column at end
*Visual representations - could be useful for assessing trends etc.
Fun in 3D too!
1] Red font: first row that defines the construct of the data table: enter date range in the format '10/02/2021-15/08/2023'
Cell E3 eqn (drag to right):
=IFERROR(IF($A3>EDATE(E$2,1),0,MAX(,IFERROR(IF(MIN($B3,MIN(EDATE(E$2,1),$B3))=E$2-1,0,MIN($B3,MIN(EDATE(E$2,1),$B3))),"")-MAX($A3,E$2))),0)
(Similar to what we've seen previously)
2] Table below red font: enter any start date (as a regular date, e.g. dd/mm/yyyy) < end date (likewise, regular date) in columns A, B as desired/req.
Data Table
3] Data Table (column data): enter the following in cell c4 (drag down as req.)
=TEXT(A4,"dd/mm/yyyy")&"-"&TEXT(B4,"dd/mm/yyyy")
4] Data Table (highlight cells c3:d42, insert data table, select blank/empty cell for 'row input' and c2 for 'column input')
The data table should 'come to life' (calculate sheet, shift + F9) otherwise.
FilterXML
5] Split result by delimiter '|' using FilterXML as follows (cell E4, only drag down, not to right):
=IFERROR(TRANSPOSE(FILTERXML("<AllText><Num>"&SUBSTITUTE(LEFT(MID(D4,2,LEN(D4)-1),LEN(MID(D4,2,LEN(D4)-1))-1),"|","</Num><Num>")&"</Num></AllText>","//Num")),"")
VALIDATION
Note the check column: date difference = sum of days in table (default cell colour is otherwise RED):
REVISION 2
Here is the formula for a static version of above (i.e. no stacking by year, instead, each date in column headers are distinct re calcs) - it was already available in row with red font(!!)
=IFERROR(IF($A3>EDATE(C$2,1),0,MAX(,IFERROR(IF(MIN($B3,MIN(EDATE(C$2,1),$B3))=C$2-1,0,MIN($B3,MIN(EDATE(C$2,1),$B3))),"")-MAX($A3,C$2))),0)
Viola!
One potential solution would be to compare dates using the MIN and MAX functions like this:
=IF(MIN($B2+1,D$1)-MAX($A2,C$1)<0,"",MIN($B2+1,D$1)-MAX($A2,C$1))
screenshot
This solution uses month starting dates (e.g., Feb 1, 2021), but it could be adapted to work with month end dates instead (e.g., Feb 28, 2021).
The idea is that you take the later of the finish date or month end date minus the lesser of the start date or the month start date. For the first month and last months, this returns the number of days within that range inclusive of the first and last day. For all the months between the first and last months, it returns the number of days in the month.
The +1 on the minimum of the end dates seems a little counterintuitive, but it's necessary to include the first and last day in the count. Without it, you'd get 14 days in March 2022 instead of 15.
The "if less than zero" function makes it return a blank (or zero if you'd prefer) for any month outside the dat range.
This solution does not summarize by month (e.g., 19 days for Feb 2021 plus 28 days for 2022 to get 47 total days in February), but that's consistent with the sample you provided. The comments also indicate that you want to consider the years as well.
I have a data column rainfall, and a column is on that date;
I intend to extract Consecutive Days of Rain from it in a separate column.
With the formula below, I extracted Consecutive :
columnF=IF(B2>0,SUM(F1)+1,0)
But the result is in a column and I can not separate them like in attached picture (see desired result).
If we want to extract the continuity of rainfall in a separate column
How to do?
My result:
Desired result:
Following from Ted D's comment... a possible formula for the second helper column would be (in cell G2):
=IF(F2=0,0,MATCH(0,F3:F999,0)-1+F2)
This looks for the first 0 in the counter column (F) beneath our row (looking around 1000 rows down - that 999 can be changed as appropriate). We use that plus our current counter to give us the size of the block.
From there, we can make the columns with the dx1day etc. titles and populate them with the formula:
=IF($G2=VALUE(SUBSTITUTE(MID(H$1,3,999),"day","")),$F2,"")
This is parsing the number from dx1day at the top of the column (in this case H) (if you did it with just numbers and a custom format you could save that bit*). We then check if the current "block size" value (in column G) is the same as that in the header. If it is we copy the counter value (from column F), otherwise blank.
You can get away from this second helper column by replacing the $G2 with (IF($F2=0,0,MATCH(0,$F3:$F999,0)-1+$F2)) - but if makes it a bit more of a headache to understand (and debug :-)
*the way for this is to do custom format with the "Type" being "dx"0"day"... then the formula becomes =IF($G2=H$1,$F2,"") or =IF((IF($F2=0,0,MATCH(0,$F3:$F999,0)-1+$F2))=H$1,$F2,"") for the no-second-helper-column version
Currently. I have it set up when someone enters information in column E (Action Taken) then the whole row will turn yellow so it is easily seen that that item is being dealt with.
Another conditional format that I have set up is that once 5 working days pass on the date entered into column F (Date Actioned) then the row will turn red alerting the user to chase up the issue again.
Every week the user will contact more suppliers on the list regarding the listed product, and fill in their action taken and date actioned.
What I am looking to do is to add up all the suppliers contacted in one week (i.e. week 1 , 05.02.18 to 09.02.18) Which I know can be done by using the formula;
=COUNTIFS(F4:F18,">=5/2/18",F4:F18,"<=9/2/2018")
HOWEVER I only want to count each company once! So even though between the date 05.02.18 to 09.02.18, 8 actions were carried out, they only contacted 4 suppliers.
Is this possible? (FYI the screenshots attached are just a quick mock-up of the real document which contains thousands of products and more in-depth information).
If you don't mind adding a couple of working columns, the following is a possible solution:
Step 1
Set up two cells to contain the min and max dates for your range that you used in your formula =COUNTIFS(F4:F18,">=5/2/18",F4:F18,"<=9/2/2018"). This will allow you to up date things without having to recopy the formula each time. I used cells E1 and G1 for min and max date respectively.
Step 2
In a new column generate a list of supplier IDs that match your criteria. I arbitrarily chose column H. I placed the following formula in H4 and copied down:
=IF(AND(F4>=$E$1,F4<=$G$1),A4,"")
Step 3
In a new column generate a list of the count of the first time a supplier ID occurs from column H and do not count blank spaces. I arbitrarily chose column I. I placed the following formula in I4 and copied down:
=--(AND(COUNTIF($H$4:H4,H4)=1,H4<>""))
Step 4
Take the sum of the results from step 3. I arbitrarily chose to place the following formula in I19:
=SUM(I4:I18)
The "cop out" route, if you were only doing the calculation for 1 week would be to have a Pivot Table, with the Company as the Rows and the Date as the Columns. Then filter your columns, and you get a row per Company that week.
The Full route means looking into Array Formulae - you type one of these like normal, but instead of pressing [Enter], you press [Ctrl]+[Shift]+[Enter], and the equation will show in curly braces. (This is why they are sometimes called "CSE Formula" for "Control, Shift, Enter")
~Warning - This is a long walk through how I calculated the final formula. Hopefully it will make sense though!~
An array formula lets you iterate through every row in a range, calculate them seperately, and then add them all together at the end. This gives us the outside term - everything goes inside a =SUM(..). Press [Ctrl]+[Shift]+[Enter], and this will display as {=SUM(..)}
Now, what calculation do we want to be doing per row? Well, for every row where column F is within date, you want 1 per company within date. Well, another was to say "per" is "divided by" (hence the "Percentage" symbol being "0 / 0" or "%", and the lesser knows "Permille" symbol being "0 / 00" or "‰")
For the sake of reproducibility, I am going to assume that your Count is being done in Cell J2, and you have the Start/End of week dates in Cells H2 and I2
The formula for Row 4 would start out as =IF(AND(F4>=$H2,F4<=$I2), 1/???, 0), where ??? is how many times the Company on row 4 appears. Unfortunately, the AND function does not work with Array Formula. Fortunately there is an easy workaround - since boolean True/False can be treated as binary 1/0, the AND operator is the same as multiplication. Converting from boolean to binary is fastest by double-negation, so AND(F4>=H2,F4<=I2) can be rewritten as --(F4>=H2)*--(F4<=I2), which will work fine with array formula, giving us =IF(--(F4>=H2)*--(F4<=I2), 1/???, 0)
Now, before we work out what ??? should be, I'm going to skip down to row 18. There is method to this madness, I promise! Following the rules laid out above, the formula for row 18 is =IF(--(F18>=H2)*--(F18<=I2), 1/???, 0) - fairly simple? Now, if we want to run this for all rows from 4 to 18, we just need to join the ranges. So, you would get =IF(--(F4:F18>=H2)*--(F4:F18<=I2), 1/???, 0) Turning this into an Array Formula would get you an array of "1/???"s and "0"s, so add it together with SUM to get a single 'flat' number: =SUM(IF(--(F4:F18>=H2)*--(F4:F18<=I2), 1/???, 0))
Remember that "method" I mentioned earlier? Well, if we were looking for a straight Count of actions taken, ignoring the Unique Companies constraint, we could make ??? = 1, to get =SUM(IF(--(F4:F18>=$H2)*--(F4:F18<=$I2), 1, 0)) and hit [Ctrl]+[Shift]+[Enter] - which would give the same result as =COUNTIF(F4:F18, ">="&H2, F4:F18, "<="&I2) - and changing the 1 to D4:D18 would be a SUMIF on Products. (Incidentally, you can remove the IF statement from the CountIf, since the Condition returns 1 or 0 already)
So, last step! What is ??? Well, it's a Count of rows where Date Actioned is within our date bounds, and Company is the same as the current row. So, for Row 4 you have COUNTIFS(B4:B18, B4, F4:F18, ">="&H2, F4:F18, "<="&I2), and for Row 18 you get COUNTIFS(B4:B18, B18, F4:F18, ">="&H2, F4:F18, "<="&I2), making the final ??? become COUNTIFS(B4:B18, B4:B18, F4:F18, ">="&H2, F4:F18, "<="&I2) (The trick here is that the Range arguments are treated as all the cells at once, but the Condition arguments are treated as an array of each cell one-at-a-time)
Now, some people might argue that you need to put your 1/COUNTIFS(B4:B18, B4:B18, F4:F18, ">="&H2, F4:F18, "<="&I2) inside an IFERROR to be safe - however, this is in the TRUE part of an IF statement referrring to the same row, so we know that if the COUNTIF is being evaluated then there will always be at least 1 row that matches.
So, if we stick it all together, and add a load of $ symbols to lock the rows/columns in place (so that you can drag down column J to calculate for different weeks/dates in columns H and I) you get the (slightly unwieldy) formula as follows:
=SUM(IF(--($F$4:$F$18>=$H2)*--($F$4:$F$18<=$I2), 1/COUNTIFS($B$4:$B$18, $B$4:$B$18, $F$4:$F$18, ">=" & $H2, $F$4:$F$18, "<=" & $I2), 0))
And, one last time - Don't forget to press [Ctrl]+[Shift]+[Enter]
(The 2 Date cells, $H2 and $I2 are the only terms I have left 'unlocked', and even then only on the Row)
I've tried using SUMIF to obtain my results but it doesn't work properly.
I have a row of dates (XX/XX/XXXX format) and I would like to check this row for the current date.
If the row contains the current date, then I would like to sum the total of that column and row 5-20.
For example - today is 10/13/2016. I would like to search for TODAY() in a certain row (Row 1 for example), and if TODAY() is found, then total this column from row 1 down to row 3.
--A-- --B--
10/13/2016 10/14/16
1 50 10
2 10 4
3 5 6
The result should be 65 only IF the date matches TODAY().
I've also checked on giving the column letter based on the date but with no luck.
Any tips are appeciated! Thank you.
I think you can achieve this with a simple IF and a SUM
i.e. in your example above if you want the result to appear on the bottom row you can just use:
=if(B2=today(), sum(B3:B5), "")
This will display the sum at the bottom of the column for columns where the date = today and a blank in the other columns
You need to use the OFFSET function. You can find the documentation here: https://support.office.com/en-us/article/OFFSET-function-C8DE19AE-DD79-4B9B-A14E-B4D906D11B66
In your particular example the following formula will work:
=SUM(OFFSET(D2, 1, MATCH(B2, $D$2:$F$2, FALSE) - 1, 20))
You can see the formula working below. Assuming you know what the SUM formula is doing, I will explain what the OFFSET formula is doing:
First Parameter: Says start at cell D2
Second Parameter: This is how many row up/down do you want to do. In your case you need start at row below the date so '1' it is.
Third Parameter: This is how many columns to the right do you want to
go. Well the number of columns you want to go is based upon where
your date is. So this uses the match formula to figure out how far
to the right to go.
Fourth Parameter: This is how many row do you want to include. I just picked 20 to include the 20 rows below the selected cell.
You obviously need to modify the parameters a little bit to fit your exact data shape.
So I'll give it a shot:
{=SUM(HLOOKUP(TODAY(),Table_With_Dates_and_Three_Rows_Cell_Reference,{2,3,4}))}
NB: Don't type {} but put the formula inside it and then hit Ctrl+Shift+Enter to create what is called an array formula (it does array calculations element by element then submits the aggregating function value---in this case that is sum).
Column A Column B
13-06-2013 10:50
13-06-2013 11:30
13-06-2013 12:40
14-06-2013 10:30
I need to find the values which are before a particular entry date and time.
For example, say I want to find the values in the example table above that are immediately prior to the values "13-06-2013" and "12:30".
Since 12:30 is not in column B, how do I find the values I am looking for? The answer should be 13-06-2013 and 11:30.
C7 =VLOOKUP(A7&B7,A1:C4,3,TRUE)
Here A1 = B1&C1
A B C
1 414380.451388888888889 13-06-2013 10:50
2 414380.479166666666667 13-06-2013 11:30
3 414380.527777777777778 13-06-2013 12:40
4 414390.4375 14-06-2013 10:30
5
6 Enter date Enter Time Returned Time
7 13-06-2013 12:30 11:30:00
Setting 'range_lookup' as 'True' adds the flexibility to return the closest approximate value if the exact value is not available.
I think you're looking for something like this. using index and match.
I didn't take into account the date for now. but this gives you an example.
You can compare date strings with operators like > or < etc. Concatenate your values in columns A & B, compare to the desired date/time string. In cell C1 put the following formula, and then drag down:
="13-06-2013 12:30"<A1&" "&B1
or more specifically, depending on which "12:30" you want (AM or PM), ="13-06-2013 12:30AM" or ="13-06-2013 12:30PM"
Your data in column B may default to AM unless otherwise specified/imported differently, so you may need to tweak the data or to account for this.
Here is another approach to answering your question that uses a combination of MATCH, INDEX, and array operations to provide a compact formula solution that does not rely on helper columns.
I'll assume that your two columns of dates and times are in cells A2:B5, and the two date and time values that you want to look up are in cells A9:A10. Then the following two formulas will return what you require, the latest date and time values in your data that are less than or equal to the date and time that you are looking up. (The dollar signs in the formulas are hard on the eyes, but they are important if you will need to copy the formulas to other locations; for clarity, I omit them in the discussion that follows.)
DATE: =INDEX($A$2:$B$5,MATCH(A9+A10,$A$2:$A$5+$B$2:$B$5,1),1) --> 13-06-2013
TIME: =INDEX($A$2:$B$5,MATCH(A9+A10,$A$2:$A$5+$B$2:$B$5,1),2) --> 11:30 AM
These are array formulas and need to be entered with the Control-Shift-Enter key combination. (Of course, only the bits starting with the equal (=) sign and ending with the last parenthesis need to be entered into the worksheet.)
Things to consider:
The formulas assume that your data are valid Excel date and time values. Excel date values are whole numbers that count the number of days that have elapsed since January 1, 1900; Excel time values are decimal amounts between 0 and 1 that represent the fraction of 24 hours that a particular time represents. While your example data don't display AM or PM, I assume that their underlying values do have that information.
If your values are text (having been imported from another source, for instance), you should convert them to date/time values, if lucky, using only Excel's DATEVALUE and TIMEVALUE functions; if not so lucky, using some combination of Excel's string manipulation functions as well. (The values could be kept as strings, but you would almost certainly need to massage them so they would compare correctly "alphabetically" - much easier just to deal with Excel date/time values.)
If they are not already, your dates and times will need to be sorted from smallest to largest. (Your sample looks like they are sorted, and the formulas assume as much.)
How the formulas work
The basic idea behind the formulas is two-fold: first find the row in your data that holds the latest (largest) date and time that is still less than or equal to the date and time you are looking up. That row information can then be used to fetch the final result from each column of the data range (one for date and one for time).
Since both date and time figure in to what point in time is latest, the date and time components of both the value to be looked up and the values that will be searched must be combined somehow.
This can be achieved by simply adding the dates and times together. This does nothing more than what Excel does: an Excel date/time value has an integer part (the number of days since 1/1/1900) and a decimal part (the fraction of 24 hours that a particular time represents).
What is neat here is that the adding up of the dates and times - and the lookup of the particular date and time - can be done all at once, on the fly.
Take a look at the MATCH: The cells that contain the date and time to be looked up - A9 and A10 - are added together, and then this sum is matched against the sum of the date column (A2:A5) and the time column (B2:B5) - an operation that is possible of Excel's array arithmetic capabilities. The match returns a value of 2, indicating correctly that the date and time that fill your requirements are in row 2 of the data table.
DATE/TIME MATCH: = MATCH( A9+A10, A2:A5 + B2:B5, 1 ) --> 2
The 1 that is the final argument to the MATCH function is an instruction that the match results be calculated to be less than or equal to the value to be looked. It is the default value and is often omitted, or replaced with another value (for example, using a value of 0 will produce an exact match, if there is one).
(For readability, I've removed the dollar signs that are in the full formula; these anchor a range so that it remains the same even if the formula is copied to another location.)
Having figured out the row to look in, the rest of the formula is straightforward. The INDEX function returns the value in a data range that is at the intersection of a specified row and column. So, for the date in question, the formula reduces to:
DATE FETCH: = INDEX( A2:B5, 2, 1) --> 13-06-2013
In other words, INDEX is to return the value in the second row and first column of the data range A2:B5.
The formula for the time proceeds in exactly the same fashion, with the only difference that the value is returned from the second column of the data range.